Visiting her cousin Marjorie (Veronica Cartwright), sweet-but-dull Bernice (Shelley Duvall) is transformed into a smooth-talking man-trap by her vampish kin. However, the 'make-over' works too well, Bernice becomes the belle of the ball, captivating every boy's interest -- even Marjorie's boyfriend Warren (Bud Cort)
